Advertisements
Advertisements
Question
How will you separate camphor, common salt and iron nails from their mixture ?
Solution
We will use the following methods to separate camphor, common salt and iron nails from their mixture:
Take the mixture and pour it in a beaker of water. On stirring, salt will dissolve, while iron nails and camphor will not. Fold a fluted piece of filter paper and put it on the funnel. Then filter the mixture to another beaker. The salt solution will pass through and iron filings and camphor will remain on the paper. Put the filtrate into an evaporating dish and heat it over a Bunsen burner so that the water will evaporate. Eventually, salt will be left behind. Pass the magnet over the camphor and iron filings. The magnet will attract the iron, leaving behind camphor as residue.
APPEARS IN
RELATED QUESTIONS
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
What are the two conditions for the interconversion of states of matter ?
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
Name a liquid which can be classified as a pure substance and conducts electricity.
The three important metalloids are.............................. and ..........................
Define a compound. Give two points of evidence to show that sodium chloride is a compound.
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
Name a metal which has no fixed shape.
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
State whether the following statement is true or false :
Bread is an example of solid foam.
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
What is meant by a solution ? Give two examples of solutions.
One of the following is a solid foam. This one is :
Name the process which can be used to recover salt from an aqueous salt solution.
How will you separate a mixture of iron filings, chalk powder and common salt ?
The dyes present in fountain pen ink can be separated by the technique of :
Which of the following cannot be separated from air by the process of fractional distillation ?
Give some examples of the Tyndall effect observed in your surroundings?
Liquids cannot be compressed and they have fixed volume.
Define the term matter.
